Dave,
the subject line may just show my ignorance. But is there such a beast? Should there be?
I was looking at the proposal for a new style sheet for W3C documents. A sample document is at:
http://fantasai.inkedblade.net/style/design/w3c-restyle/2016/sample <http://fantasai.inkedblade.net/style/design/w3c-restyle/2016/sample>
There is really neat trick, which is based on media queries, on pushing the TOC on the left of the screen (if it is large enough), or to have a small sign on the lower left hand corner of the screen for a narrow screen. It is neat, but if the document is converted into an EPUB, it becomes unnecessary. After all, the EPUB structure requires a TOC; in many respect, that TOC on the left reproduces what Reading Systems do (and they do no matter what). The cleanest would be to control that via a media query…
Just an idea very early in the morning:-)
Ivan
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Ivan Herman, W3C
Digital Publishing Lead
Home: http://www.w3.org/People/Ivan/
mobile: +31-641044153
ORCID ID: http://orcid.org/0000-0003-0782-2704